Calculating liquid-vapour equilibrium of NH₃-CO₂-H₂ system under the conditions of urea synthesis process

• Autorzy: Piotrowski J. , Kozak R. , Kujawska M.
• Języki publikacji: EN

Abstrakty

EN

The paper presents a new method for calculation of liquid-vapour equilibrium establishing in an urea synthesis process under the following conditions: T=433-463 K, NH(3)JCO2=2.3-3.6, Hpexc/CO2=O.I-O.6 and in the whole range of carbon dioxide conversion. The method is based on the excess Gibbs free energy of the liquid phase which leads to equations describing the composition effect on the activity coefficients according to Gibbs-Duhem equation. The method makes it possible to calculate the equilibrium composition of liquid and gas phase as well as equilibrium pressure and gives thermodynamic characteristics of the system.

Słowa kluczowe

EN

liquid-vapour equilibrium; urea; synthesis

PL

równowaga ciecz-para; mocznik; synteza

• Wydawca: Centrum Materiałów Polimerowych i Węglowych PAN
• Czasopismo: Polish Journal of Applied Chemistry
• Rocznik: 1999
• Tom: Vol. 43, nr 1-2
• Strony: 57--67
• Opis fizyczny: Bibliogr. 23 poz.

Twórcy

autor

Piotrowski J.

• Institute of Chemistry, Inorganic Technology and Electrochemistry. Silesian Technical University, 44-101 Gliwice, ul. Krzywoustego 6, Poland

autor

Kozak R.

• ZA “Puławy” S.A., 24-100 Puławy, Al. Tysiąclecia P.P 13, Poland

autor

Kujawska M.

• Institute of Chemistry, Inorganic Technology and Electrochemistry. Silesian Technical University, 44-101 Gliwice, ul. Krzywoustego 6, Poland